Grain-door.



Patented Dec. 23, |902.

c. A. &V.|..1. House.

G R Al N D U 0 R (Application filed Oct. 6, 1902A (lo Model.)

QL-; Y.

lnventor Attorneys Rs co. Pnourua, wAsHmswN n c Uiin Sr S? CHARLES A. HOUSE AND JAMES J.

HOUSE, OF KEEVATIN, CANADA,

ASSIGNORS OF ONE-THIRD TO STEPHEN S. OUMMINS, OF RAT PORT- Asn, CANADA.

GRAIN-DOOR.

SPECIFICATION' forming part of Letters Patent No. 716,546, dated December 23, 1902.

Application filed October 6,1902.

T0 all wtom t indy concern-.-

Beit known that we,OHARLEs A HOUSE and JAMES J. HOUSE, subjects of the King of Great Britain,residingatKeewatin,district of Rainy River, Province of Ontario, Canada, have invented certain new and useful Improvements in Grain-Doors; and we do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. Y

Our invention relates to agrain-door adapted for unloading grain-cars, and of that type which is set to cross the doorway of a box-car and arranged to slide vertically.

Our object, therefore, is to produce a door which has means for opening the saine outwardly independently of the sliding movement, so as to relieve the pressure from the interior of the car before the door is slid up out of the way.

To these ends our invention consists in the construction hereinafter set forth, and shown in the accompanying drawings, wherein- Figure 1 is a side elevation of a portion of a freight-car having ourimproved door applied thereto. Fig. 2 is a transverse section through the door on the line 2 2 of Fig. 1.

The same numerals of reference denote like parts in both figures of the drawings.

The numeral 3 designates the body of a boxcar, which has an opening in the side 4, forming the door or entrance-way, which is flanked on the sides by jainbs 5, against which on the interior side rests the grain-door itself, which also rests on the sill 7 and is arranged to slide up and down between guide-bars 8 in any approved style. This door is, as usual, of about half the height of the opening 4, sufficient to hold the amount of grain that the car is destined to carry, and this grain is banked up behind the door, so as to keep it pressed against the jambs 5, being composed of horizontal boards secured together by battens 9.

Our improvement consists in cutting a hole in the central part of the grain-door and extending almost completely across the same, which door is closed by an auxiliary or trap door 10, provided with battens 11, forming Serial No. 126,037. (No model.)

continuations of the battens 9 and hinged thereto at the upper edge by strap-hinges 12. To the battens 1l, near the lower end thereof, are fixed a pair of swinging bars 13, which are pivoted at 14 at a point above their center and are connected together at their upper end by a link-bar l5. Their lower ends project below the bottom of the grain-door 9 and into grooves 16, formed in the car-sill 7, as shown in Fig. 2. These bars 13 are furthermore held rigidly fixed, so as to prevent the door from yielding in either direction, by metal cleats 17, projecting over and engaging the ends of the bars 13 when the latter are vertical, as shown in full lines in Fig. 1.

The bar 15 has iixed to a point midway thereof a transversely-projecting pin 18, with which engages the forked end 19 of a leverbar 20, which is pivoted at 21 upon the trapdoor 10, and has a pedal extension 22 extending at right angles therefrom in position to be depressed by the foot, so as turn the leverbar and the other parts into the position shown by dotted lines in Fig. 1. This will, as shown, cause the swinging bars 13 to be raised from the slot 16 and released from the cleats 17 so that the pressure ofthe grain on the interior of the car will cause' the trapdoor to be swung open and the grain within to be allowed to flow out into a chute or conveyer until the pressure is relieved from the grain-door 9, when the latter may be easily raised and suspended from the roof of the car, as in the ordinary contrivance, care being taken before raising the grain-door 9 to close the trap-door by swinging the bars 13 into their vertical position.

l/Vhile we have shown in the accompanying drawings the preferred form of our invention, it will be understood that we do not limit ourselves to the precise form shown, for many of the details may be changed in form or position without affecting the operativeness or utility of our invention, and we therefore reserve the right to make all such modifications as are included within the scope of the following claimsor of mechanical equivalents to the structures set forth.

We claim- 1. A grain-door arranged to slide vertically IOO . and having an opening therein, a trap-door closing said opening, hinges suspending said trap-door from the upper edge of said opening, and a pair of swinging bars 13 pivoted to the trap-door and arranged to engage with suitable fastenings on the main part of the door, substantially as described.

2. In a sliding door, a trap hinged at its upper edge, a pair of swinging bars pivoted to said trap, alink-bar connecting said swinging bars together in parallel position, and footoperated means connected to said link-bar for opening said swinging bars, the ends of the latter being arranged to project into grooves in the sill of the car.

3. In a sliding grain-door, the combination of a trap, hinged at it-supper edge, a pair of looking-bars 13 pivoted to said trap at opposite ends thereof, a link-bar pivotally connected to the ends of said looking-bars and holding thenn in parallel relation to each other, the ends of said looking-bars being arranged t0 project into grooves in the oar-sill, and a pair of cleats fixed to the grain-door below said trap and under which the ends of said looking-bar are adapted to be engaged.

4. In a sliding grain-door,'the combination of a trap hinged at its upper edge, a pair of locking-bars 13 pivoted to said trap at opposite sides thereof, a link-bar pivotally conneoted to the ends of said looking-bars and holding them in parallel relation to each other, the ends of said looking-bars being arranged to project into grooves in the oar-sill, a pair of cleats fixed to the grain-door below said trap and under which the ends of said looking-bars are adapted to be engaged, and a depressible foot-lever pivoted on said trap and having an engagement with said linkbar whereby said looking-bars are swunglaterally to open said trap.

In witness whereof we have hereunto set our hands in the presence of two witnesses.

CHARLES A. HOUSE. JAMES J. HOUSE.

Witnesses W. LYON, R. BOARDMAN. 

